Yaskawa Sigma-5 User Manual: Design and Maintenance - Linear Motors - Manual (Page 210)

5 Adjustments
5.9.3 Force Reference Filter
5-66
(2) Notch Filter
The notch filter can eliminate specific frequency vibration generated by sources such as resonances of ball
screw axes.
The notch filter puts a notch in the gain curve at the specific vibration frequency. The frequency components
near the notch frequency can be eliminated with this characteristic.
A higher notch filter Q value produces a sharper notch and phase delay.
Set the notch filter enabled/disabled with Pn408.
Q value = 0.7 Q value = 1.0
Parameter Function When Enabled Classification
Pn408
n.†††0 1st step notch filter disabled. [Factory setting]
Immediately Setup
n.†††1 1st step notch filter enabled.
n.†0†† 2nd step notch filter disabled. [Factory setting]
n.†1†† 2nd step notch filter enabled.
Notch filter
Notch filter
Gain
(db)
Frequency (Hz)
-300
-200
-100
0
100
2 10 10
3 10 4
2 10 10
3 10 4
Phase
Frequency (Hz)
-400
-300
-200
-100
0
(deg)
-300
-200
-100
0
100
2
10 10
3
10
4
2
10 10
3
10
4
-400
-300
-200
-100
0
Notch filter
Gain
(db)
Frequency (Hz)
Notch filter
Phase
(deg)
Frequency (Hz)